A low-high pressure soft start hydraulic oil source system

Abstract

The invention belongs to the design technologies of oil sources of hydraulic systems and particularly discloses a lower-high pressure soft-start hydraulic oil source system. The lower-high pressure soft-start hydraulic oil source system comprises a system high-pressure pipe and a system oil return pipe which are respectively connected with an oil tank, the system high-pressure pipe is sequentially connected with a high-pressure filter, a one-way valve, a high-pressure hose, a main pump, a low-pressure hose and a butterfly valve, and an oil return opening of the oil tank is connected with the system oil return pipe through the oil return filter and a cooler sequentially; a low-high pressure soft-start module is arranged between the system high-pressure pipe and the system oil return pipe. According to the lower-high pressure soft-start hydraulic oil source system, pressure pulses to all pipelines and elements such as valves in a system high-pressure loop due to high-pressure oil can be reduced, the pulse peak value can be effectively reduced, and accordingly impacts on every element in the system can be reduced, so that the operational reliability is greatly improved; meanwhile, influences on a seal structure of an original design of the system are also reduced greatly, and impulsive noises and local leakage caused by hydraulic oil sources are effectively prevented, so that the service life of the hydraulic oil sources is greatly prolonged.

Description

technical field [0001] The invention belongs to the hydraulic system oil source design technology, in particular to a hydraulic oil source. Background technique [0002] Hydraulic systems are widely used in aerospace, military industry, transportation, and ships due to their small size and mass, large power-to-weight ratio, easy to realize reciprocating motion, easy to realize large-scale continuously variable speed, stable transmission, long service life, and easy operation. , mining and other industrial fields. [0003] As the power source of the hydraulic system, the hydraulic oil source provides sufficient high-pressure oil for actuators and other actuators, and controls the actuators to perform specified actions through control components such as servo valves. It is an important part of the hydraulic system. The performance of the hydraulic oil source directly determines whether the design function of the hydraulic system can be realized. An oil source with excellent ...

AI Technical Summary

Problems solved by technology

When the motor is turned on, its speed rises rapidly in a short period of time, driving the oil pump to output a large amount of high-pressure oil to the hydraulic system instantaneously, forming a pressure peak, which can reach twice the pump output pressure. The components cause a huge impact, which seriously affects and damages the internal structure and seal of the components, resulting in the failure of the partial seal of the system and the wear of the components, causing impact noise and partial leakage of the hydraulic oil source, which greatly shortens the service life of the hydraulic oil source. Shortened, severe impact may cause oil source function failure, unable to work normally

When the actuator is severely impacted, it may cause malfunction, which may damage the connecting parts or even cause a safety accident

This phenomenon is especially obvious in high-pressure and large-flow hydraulic oil sources, which has great potential safety hazards

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